Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

undef-class-property-error.m
// RUN: %clang_cc1 -fsyntax-only -verify %s

@implementation I (C) // expected-error {{cannot find interface declaration for 'I'}}

+ (void)f {
  self.m; // expected-error {{member reference base type 'Class' is not a structure or union}}
}

@end